:root{--blue:#134c82;--green:#26986f;--ink:#17334a;--muted:#657783;--line:#dce4e8;--paper:#f7f9f8}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.8;background:#fff}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible{outline:3px solid #35ac7e;outline-offset:5px}button{color:inherit}header{height:96px;padding:0 5%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#fffffff2;position:sticky;top:0;z-index:10;backdrop-filter:blur(15px)}.brand{display:flex;gap:13px;align-items:center;font-size:18px;font-weight:650;letter-spacing:.5px}.brand img{width:48px;height:53px;object-fit:contain}.brand small{display:block;font-size:8px;letter-spacing:2.1px;color:var(--blue)}nav{display:flex;align-items:center;gap:28px;font-size:13px}nav a:hover,.text-link:hover{color:var(--green)}.nav-contact{padding:9px 18px;border:1px solid #b6c5d0}.nav-contact span{margin-left:18px}.menu{display:none}.hero{display:grid;grid-template-columns:1fr 1fr;min-height:630px}.hero-copy{padding:78px 7% 36px 10%}.eyebrow{font-size:11px;letter-spacing:2.2px;font-weight:600;display:flex;align-items:center;gap:10px}.eyebrow i{width:7px;height:7px;background:var(--green);border-radius:50%}h1{font-size:clamp(38px,4.5vw,68px);line-height:1.28;letter-spacing:-2px;font-weight:600;margin:28px 0 25px}h1 span{color:var(--green)}.hero-copy>p{color:var(--muted);font-size:17px;line-height:1.9}.hero-actions{display:flex;gap:30px;align-items:center;margin-top:32px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:34px;padding:13px 25px;background:var(--blue);color:#fff;border:1px solid transparent;font-size:13px}.button:hover{background:#226496}.text-link{font-size:13px}.text-link span{margin-left:15px}.hero-caption{display:flex;gap:20px;font-size:10px;letter-spacing:1px;color:#83929a;border-top:1px solid var(--line);margin-top:55px;padding-top:18px}.hero-art{background:#153f5c;position:relative;overflow:hidden;min-width:0;color:#b7d6dc}.art-grid{position:absolute;inset:0;background-image:linear-gradient(#ffffff06 1px,transparent 1px),linear-gradient(90deg,#ffffff06 1px,transparent 1px);background-size:44px 44px}.art-label{position:absolute;left:38px;top:30px;font-size:11px;letter-spacing:3px;line-height:1.6;z-index:1}.power-art{width:100%;height:100%;position:absolute;inset:10px 0 0}.art-bottom{position:absolute;bottom:24px;left:38px;right:30px;display:flex;justify-content:space-between;font-size:8px;letter-spacing:1.3px}.intro-strip{display:flex;justify-content:space-between;align-items:center;background:#edf3f1;padding:20px 7%;font-size:13px;letter-spacing:2px}.intro-strip b{font-size:20px;color:var(--green);font-weight:400}.section{padding:100px 7%;scroll-margin-top:0}.about,.process{display:grid;grid-template-columns:1fr 2fr;gap:70px}.section-label{font-size:10px;letter-spacing:2px;color:var(--green)}.section-label span{display:block;color:var(--ink);font-size:17px;letter-spacing:0;margin-top:10px}h2{font-size:clamp(29px,3.1vw,43px);line-height:1.45;font-weight:550;letter-spacing:-1px;margin:0 0 25px}.about p{max-width:660px;color:var(--muted);font-size:14px}.about p.lead{font-size:17px;color:var(--ink)}.facts{display:grid;grid-template-columns:1fr 1fr 1fr;border-top:1px solid var(--line);margin-top:35px;padding-top:27px;gap:15px}.facts strong{font-size:30px;font-weight:500;letter-spacing:-1px}.facts strong span{font-size:13px;margin-left:4px}.facts div:last-child strong{font-size:21px;display:block;margin-top:8px}.facts small{display:block;color:var(--muted);font-size:11px;margin-top:6px}.services{background:var(--paper)}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:38px}.section-heading .eyebrow{color:var(--green);margin-bottom:18px}.section-heading h2{margin:0}.section-heading>p{color:var(--muted);font-size:13px}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);background:white}.service-grid article{padding:30px;position:relative}.service-grid article+article{border-left:1px solid var(--line)}.service-no{position:absolute;right:25px;top:25px;font-size:11px;color:#8a989e}.service-icon{color:var(--green);font-size:43px;line-height:1;margin:12px 0 37px}h3{font-size:20px;font-weight:550;line-height:1.55}.service-grid p{font-size:13px;color:var(--muted);margin-bottom:32px}.service-en{font-size:9px;letter-spacing:1px;color:#87969e}.scope-note{font-size:11px;color:#84929a;margin:20px 0 0}.filters{display:flex;gap:8px;flex-wrap:wrap}.filters button{background:transparent;border:1px solid var(--line);padding:7px 17px;font-size:12px}.filters button.active{background:var(--blue);border-color:var(--blue);color:white}.project{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);padding:32px 0;gap:7%}.project[hidden]{display:none}.project-visual{position:relative;min-height:310px;overflow:hidden;background:#e1e9ed;display:flex;align-items:center;justify-content:center}.project-visual>span{position:absolute;top:18px;left:22px;font-size:11px;color:#718895}.project-visual>small{position:absolute;bottom:17px;left:22px;font-size:8px;letter-spacing:1.5px;color:#587586}.cabinet{display:flex;gap:6px;transform:skewY(-6deg);filter:drop-shadow(15px 20px 10px #34566a22)}.cabinet i{display:block;width:57px;height:170px;background:linear-gradient(90deg,#f7fafa,#c4d4dd);border:1px solid #a6bac6;position:relative}.cabinet i:before{content:"";position:absolute;top:25px;left:12px;width:29px;height:25px;background:#245570;border:4px solid #9bb0bd}.cabinet i:after{content:"";position:absolute;left:18px;bottom:25px;width:22px;height:52px;background:repeating-linear-gradient(#7f9ba9 0 2px,transparent 2px 7px);border-top:3px solid #26986f}.pv-two{background:#e4eeea}.pv-three{background:#e9ece8}.park-art{display:flex;gap:8px;align-items:flex-end;transform:skewY(-8deg);filter:drop-shadow(14px 18px 8px #1f4d3d20)}.park-art i{width:73px;height:130px;background:linear-gradient(90deg,#e8f0ec,#a8c4b9);border:1px solid #86a79b;border-top:17px solid #4a7a68;position:relative}.park-art i:after{content:"";position:absolute;inset:20px 18px;background:repeating-linear-gradient(#7e9c90 0 2px,transparent 2px 8px)}.park-art i:nth-child(2){height:160px}.pv-three .park-art{transform:skewY(8deg)}.pv-three .park-art i{background:linear-gradient(90deg,#eef1e8,#bdc7b0);border-color:#9ba78e;border-top-color:#61774f}.project-info{padding:8px 0}.tag{font-size:10px;color:var(--green);letter-spacing:1px}.project-info h3{font-size:24px;margin:15px 0 10px}.project-info>p{color:var(--muted);font-size:12px}.project-info dl{font-size:11px;padding:12px 0;border-top:1px solid var(--line)}dl div{display:flex;gap:20px;margin:6px 0}dt{color:#80929b;min-width:66px}dd{margin:0}.detail{border:0;border-bottom:1px solid #a7bbc7;background:none;padding:7px 0;font-size:12px;display:flex;justify-content:space-between;width:140px}.detail:hover{color:var(--green)}.process{background:#153c56;color:#fff}.process .section-label{color:#7bc7a6}.process .section-label span{color:white}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:40px}.steps>div{border-top:1px solid #577488;padding-top:15px}.steps b{font-size:12px;color:#73bb9c;font-weight:400}.steps h3{font-size:16px;margin:15px 0 8px}.steps p{font-size:11px;color:#b1c5d1}.qualification-list{border-top:1px solid var(--line)}.qualification-list article{display:flex;gap:35px;align-items:center;border-bottom:1px solid var(--line);padding:25px 0}.qualification-list article>span:first-child{font-size:11px;color:var(--green)}.qualification-list h3{font-size:18px;margin:0}.qualification-list p{font-size:12px;color:var(--muted);margin:5px 0 0}.q-note{margin-left:auto;font-size:11px;color:#84969e}.contact{background:#edf3f1;display:grid;grid-template-columns:1.5fr 1fr;gap:12%}.contact .eyebrow{color:var(--green);margin-bottom:20px}.contact h2{font-size:clamp(30px,3vw,44px)}.contact p{font-size:13px;color:var(--muted)}.contact-actions{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0 0}.light{background:white;color:var(--blue);border:1px solid #c1d0d7}.light:hover{background:#dae8e3}.contact-pending{padding-top:20px;border-top:1px solid #ccdad5;margin-top:26px}.contact-card{background:white;padding:25px 30px}.contact-card img{width:120px;height:95px;object-fit:contain;display:block;margin-bottom:15px}.contact-card strong{display:block;font-size:16px}.contact-card>span{font-size:9px;letter-spacing:2px;color:var(--green)}.contact-card p{font-size:11px}.copy-name{border:0;border-top:1px solid var(--line);background:none;width:100%;text-align:left;padding:15px 0 0;font-size:11px}.copy-name span{float:right}footer{display:flex;justify-content:space-between;gap:20px;padding:25px 7%;font-size:10px;color:#7d8e97}footer>div{display:flex;gap:20px;flex-wrap:wrap}footer p{margin:0}.mobile-bar{display:none}dialog{border:0;max-width:580px;width:calc(100% - 40px);padding:45px;color:var(--ink);box-shadow:0 20px 100px #17334a33}dialog::backdrop{background:#102c42aa;backdrop-filter:blur(4px)}dialog h2{font-size:27px;margin-top:20px}dialog p{font-size:14px;white-space:pre-line;color:var(--muted)}dialog .button{margin-top:20px}.close{position:absolute;right:15px;top:10px;border:0;background:none;font-size:28px}#wechat-qr{max-width:240px;width:100%}#toast{position:fixed;bottom:90px;left:50%;transform:translateX(-50%);background:#17334a;color:#fff;padding:10px 20px;font-size:13px;z-index:100;opacity:0;pointer-events:none;transition:opacity .2s}#toast.show{opacity:1}.skip{position:fixed;left:20px;top:-100px;background:white;padding:10px;z-index:99}.skip:focus{top:10px}[hidden]{display:none!important}@media(min-width:1600px){body{max-width:1600px;margin:auto}header{padding-left:7%;padding-right:7%}}@media(max-width:1050px){header{padding:0 4%;height:80px}.brand{font-size:15px}.brand small{font-size:7px;letter-spacing:1px}nav{gap:17px;font-size:12px}.hero{min-height:560px}.hero-copy{padding-top:65px}.hero-actions{gap:18px}.section{padding:75px 6%}.about,.process{gap:35px;grid-template-columns:1fr 2.4fr}.steps{gap:15px}.service-grid article{padding:23px}.contact{gap:7%}}@media(max-width:760px){html{scroll-padding-top:73px}header{height:73px;padding:0 5%}.brand{font-size:13px;gap:9px;letter-spacing:0}.brand img{width:33px;height:38px}.brand small{font-size:5.6px;letter-spacing:.8px}.menu{display:block;background:none;border:0;font-size:11px;padding:10px 0 10px 12px}.menu span{margin-left:8px}nav{display:none;position:absolute;top:73px;left:0;right:0;background:white;padding:18px 6%;box-shadow:0 20px 30px #17334a15;align-items:stretch}nav.open{display:flex;flex-direction:column;gap:0}nav a{padding:11px 0}.nav-contact{border:0}.hero{display:flex;flex-direction:column;min-height:0}.hero-copy{padding:43px 6% 28px}.eyebrow{font-size:9px;letter-spacing:1.5px}h1{font-size:44px;letter-spacing:-1.5px;margin-top:23px}.hero-copy>p{font-size:14px}.hero-actions{margin-top:25px}.hero-caption{margin-top:30px;padding-top:15px;font-size:9px}.hero-art{height:350px}.power-art{height:420px;top:-25px}.art-label{left:22px;top:20px;font-size:9px}.art-bottom{left:22px;bottom:15px;font-size:6px}.intro-strip{padding:16px 6%;flex-wrap:wrap;gap:8px;font-size:10px;letter-spacing:0}.intro-strip b{font-size:13px}.intro-strip span{white-space:nowrap}.intro-strip b:last-of-type{display:none}.intro-strip span:last-child{display:none}.section{padding:58px 6%}.about,.process,.contact{grid-template-columns:1fr;gap:27px}.section-label span{display:inline-block;margin:0 0 0 18px;font-size:13px}h2{font-size:29px;margin-bottom:20px}.about p.lead{font-size:15px}.about p{font-size:13px}.facts strong{font-size:27px}.facts div:last-child strong{font-size:16px;margin-top:10px}.facts small{font-size:10px}.section-heading{display:block;margin-bottom:28px}.section-heading>p{margin-top:20px}.service-grid{grid-template-columns:1fr}.service-grid article{padding:25px}.service-grid article+article{border-left:0;border-top:1px solid var(--line)}.service-icon{margin:0 0 16px;font-size:35px}.service-grid h3{font-size:19px;margin:12px 0}.service-grid p{margin-bottom:20px}.filters{margin-top:22px}.filters button{font-size:11px;padding:6px 14px}.project{grid-template-columns:1fr;gap:20px;padding:24px 0}.project-visual{min-height:255px}.project-info h3{font-size:21px}.project-info{padding:0 0 10px}.steps{grid-template-columns:1fr 1fr;gap:22px;margin-top:28px}.qualification-list article{gap:18px;padding:20px 0}.qualification-list h3{font-size:15px}.qualification-list p{font-size:11px}.q-note{display:none}.contact-card{margin-top:10px;padding:25px}.contact-actions{margin-top:20px}.contact h2{font-size:30px}footer{display:block;padding:23px 6% 90px}footer>div{margin-top:10px}.mobile-bar{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:9;background:#fffffff5;backdrop-filter:blur(12px);padding:11px 5% calc(11px + env(safe-area-inset-bottom));border-top:1px solid var(--line);justify-content:space-between;font-size:12px}.mobile-bar a:last-child{color:var(--green);font-weight:600}dialog{padding:35px 25px}dialog h2{font-size:23px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* 2026-11: photographic hero, expanded case collection, business contact */
.photo-hero{position:relative;min-height:630px;background:#d8e3df}.photo-hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:48% center}.photo-caption{position:absolute;left:0;right:0;bottom:0;display:flex;justify-content:space-between;align-items:end;gap:20px;padding:40px 25px 20px;background:linear-gradient(transparent,#0d2936a8);color:white}.photo-caption span{font-size:9px;letter-spacing:1.4px}.photo-caption small{font-size:9px;opacity:.85}.projects .section-heading{display:block}.projects .filters{margin-top:28px}.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.project-card{display:block;border:1px solid var(--line);padding:25px!important;background:#fff;transition:transform .2s,box-shadow .2s}.project-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px #17334a0a}.case-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:18px}.case-index{font-size:24px;line-height:1;color:#acc2cb;font-weight:400}.project-card .project-info{padding:0;display:flex;flex-direction:column;height:calc(100% - 62px)}.project-card h3{font-size:19px;margin:0 0 15px;min-height:88px}.project-card .case-summary{font-size:12px;color:var(--muted);margin:0 0 20px}.case-client{border-top:1px solid #edf1f2;padding-top:15px;font-size:11px!important;min-height:68px;margin-top:auto}.case-client>span{display:block;color:#8e9ba2;font-size:9px;margin-bottom:4px}.project-card .detail{margin-top:12px;width:100%}.credential-meta{font-size:11px!important;letter-spacing:.3px}.qualifications .q-note{line-height:1.7;display:block;text-align:right;white-space:nowrap}.team-qualifications{display:grid;grid-template-columns:1fr 1fr;gap:50px;padding:35px;background:#f3f7f5;margin-top:28px}.team-qualifications .eyebrow{font-size:9px;color:var(--green)}.team-qualifications h3{font-size:21px;margin:12px 0}.team-qualifications p{font-size:12px;color:var(--muted);margin:0}.team-badges{display:flex;flex-wrap:wrap;gap:10px;align-content:center}.team-badges span{background:white;padding:8px 13px;font-size:11px;border:1px solid #d6e3dc}.business-phone{margin:30px 0 25px}.phone-label{display:block;font-size:12px;color:var(--green);letter-spacing:1px}.business-phone>a{display:block;font-size:clamp(32px,3.5vw,48px);line-height:1.5;letter-spacing:1px;color:var(--blue);font-weight:550;font-variant-numeric:tabular-nums}.business-phone>small{font-size:11px;color:var(--muted);letter-spacing:1px}.professional-contact .contact-actions{margin-top:0}.contact-preparation{font-size:11px!important;border-top:1px solid #cddcd4;padding-top:20px;margin-top:30px}.contact-detail{padding-top:15px}.contact-detail>small{font-size:9px;color:#8b9b9f;letter-spacing:1px}.contact-detail p{margin:5px 0;font-size:12px}.company-domain{display:flex;justify-content:space-between;color:var(--blue);font-size:13px;padding:20px 0 15px}.professional-contact .contact-card{padding:30px}.professional-contact .contact-card img{height:90px;margin-bottom:20px}
@media(max-width:1050px){.case-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.photo-hero{min-height:560px}}
@media(max-width:760px){.photo-hero{min-height:0;height:350px}.photo-caption{padding:40px 18px 15px;gap:10px}.photo-caption span{font-size:7px}.photo-caption small{font-size:8px}.case-grid{grid-template-columns:1fr;gap:15px}.project-card{padding:22px!important}.project-card h3{min-height:0;font-size:20px}.project-card .project-info{height:auto}.case-client{min-height:0}.team-qualifications{grid-template-columns:1fr;gap:23px;padding:23px}.qualifications .q-note{font-size:9px}.qualification-list article{gap:13px}.credential-meta{font-size:10px!important;overflow-wrap:anywhere}.business-phone>a{font-size:36px}.professional-contact .contact-card{padding:25px}}

/* Field engineering hero: retain the complete team and tower composition. */
@media(min-width:761px){.hero{grid-template-columns:40% 60%;min-height:560px}.hero-copy{padding:58px 8% 30px 12%}.hero h1{font-size:clamp(36px,4vw,56px)}.photo-hero{min-height:560px}.photo-hero>img{object-position:55% center}.hero-caption{margin-top:35px}}
@media(max-width:760px){.photo-hero{height:auto;aspect-ratio:3/2}.photo-hero>img{object-position:center}.photo-caption span{font-size:7px}}

/* 工程现场与媒体报道 */
.site-gallery[hidden]{display:none}.site-gallery{margin:0 0 48px;background:#fff;border:1px solid var(--line);padding:28px}.gallery-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.gallery-heading h3{font-size:24px;margin:6px 0 0}.gallery-controls{display:flex;gap:8px}.gallery-controls button{background:white;border:1px solid var(--line);padding:6px 16px;min-height:44px}.gallery-picture{position:relative;display:block;width:100%;background:#122c3e;border:0;padding:0;overflow:hidden;touch-action:pan-y}.gallery-picture img{display:block;width:100%;height:520px;object-fit:contain}.gallery-picture span{position:absolute;right:18px;bottom:18px;background:#fffef0;padding:4px 13px;font-size:12px}.gallery-caption{display:flex;justify-content:space-between;gap:20px;padding-top:18px}.gallery-caption strong{font-size:20px}.gallery-caption p{margin:4px 0 0;color:var(--muted)}#gallery-count{white-space:nowrap;font-variant-numeric:tabular-nums;color:var(--muted)}.gallery-dots{display:flex;gap:5px;margin-top:12px}.gallery-dots button{width:40px;height:28px;border:0;background:transparent;padding:10px 3px}.gallery-dots button:after{content:"";display:block;height:3px;background:#cfdae2}.gallery-dots button[aria-pressed="true"]:after{background:var(--blue)}.gallery-dialog{max-width:95vw;width:1100px;padding:45px 20px 15px}.gallery-dialog img{display:block;max-width:100%;max-height:75vh;margin:auto;object-fit:contain}.gallery-dialog p{margin:12px 0 0}.media-section{background:var(--paper)}.media-card{display:grid;grid-template-columns:210px 1fr;border-top:2px solid var(--blue);background:white}.media-source{padding:34px;display:flex;flex-direction:column;gap:8px;border-right:1px solid var(--line)}.media-source>span{color:var(--green);font-size:12px}.media-source strong{font-size:28px}.media-source time,.media-source small{color:var(--muted);font-size:13px}.media-content{padding:34px 40px}.media-content h3{font-size:26px;line-height:1.5;margin:0 0 16px}.media-content p{color:var(--muted);max-width:780px}.media-links{display:flex;gap:30px;flex-wrap:wrap;margin-top:24px}nav{gap:20px}@media(max-width:760px){.site-gallery{padding:16px}.gallery-heading{align-items:start;flex-direction:column;gap:12px}.gallery-heading h3{font-size:21px}.gallery-picture img{height:330px}.media-card{grid-template-columns:1fr}.media-source{padding:24px;border-right:0;border-bottom:1px solid var(--line)}.media-content{padding:24px}.media-content h3{font-size:22px}.gallery-caption strong{font-size:18px}}

/* 官方公众号与首页底部中央备案栏 */
.professional-contact .official-account{grid-column:1 / -1;grid-row:2;display:grid;grid-template-columns:1fr 1.6fr;align-items:center;gap:32px;padding:30px;background:#fff;border:1px solid var(--line);color:var(--ink)}.official-account h3{font-size:24px;margin:8px 0}.official-account p{color:var(--muted);margin:8px 0}.official-account img{display:block;width:100%;height:auto;max-width:760px}.site-footer{display:block;padding:28px 5% 30px;background:#fff;color:var(--ink)}.site-footer .footer-top{display:flex;justify-content:space-between;align-items:center;gap:20px}.site-footer .filing-bar{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;width:100%;margin-top:20px;padding-top:20px;border-top:1px solid var(--line);text-align:center;font-size:14px;line-height:1.8}.filing-bar #icp{display:inline-block;font-size:14px;color:#344e60}.filing-bar .filing-query{font-size:12px;color:#627786}.filing-bar a:hover{text-decoration:underline;color:var(--blue)}.filing-bar [hidden]{display:none!important}@media(max-width:760px){.professional-contact .official-account{grid-template-columns:1fr;padding:20px;gap:16px;grid-row:auto}.official-account h3{font-size:21px}.site-footer{padding-bottom:96px}.site-footer .footer-top{flex-direction:column;gap:8px}.site-footer .filing-bar{gap:8px}.filing-bar .filing-query{max-width:290px}}